Home / 221,148.72-305,154.45-130,508.46

Finding the Fourth Proportional to 221,148.72, 305,154.45 and 130,508.46

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Solution

The fourth proportional to 221,148.72, 305,154.45 and 130,508.46 is: 180,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,148.72 : 305,154.45 = 130,508.46 : x
  2. Step 2: Convert to fraction form
    221,148.72/305,154.45 = 130,508.46/x
  3. Step 3: Cross multiply
    221,148.72x = 305,154.45 × 130,508.46
  4. Step 4: Simplify right side
    221,148.72x = 39,825,237,331.65
  5. Step 5: Solve for x
    x = 39,825,237,331.65/221,148.72
  6. Step 6: Final answer
    x = 180,083.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.